钻洞是个很难的技术活。

It's a hard skill to make the hole.

锥子：在纺织品和皮革上钻洞的小而有尖头的工具。

Bodkin: a small sharply pointed instrument for making holes in fabric or leather.

锥子是一种在纺织品和皮革上钻洞的小而有尖头的工具。

Bodkin is a small, sharply pointed instrument for making holes in fabric or leather.